Calibration Checks. Graco 332562F, ProMix® PD2K Electronic Proportioner

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Calibration Checks. Graco 332562F, ProMix® PD2K Electronic Proportioner | Manualzz

Calibration Checks

doing the pressure check.

• The first time the system is operated.

• Whenever new materials are used in the system, especially if the materials have viscosities that differ significantly.

• At least once per month as part of regular maintenance.

• Whenever a pump is serviced or replaced.

During each pressure test, the dose valve will close during an up stroke and a down stroke (in either order). This test is to verify that the valves are seating properly and not leaking. If leaking occurs, the system will alarm after the test for that particular pump direction.

check.

1.

Set the mix manifold to the SPRAY position.

2.

The pump and lines must be primed with color or catalyst before doing the Pressure Check. See

Prime and Fill the System, page 27

.

3.

If the display is on a Run Mode screen, press to access setup screens.

4.

Scroll to Calibrate to display

Calibrate Screen 1, page 63 .

5.

Press the Pressure Check button for the desired pump. The pump will build pressure in the line to a minimum of the Stall Test Pressure.

The pump will then move to the center stroke position and stall test the upstroke, followed by the downstroke.

6.

The pressure and flow that the unit measured are displayed on the screen. Compare with the maximum leak rate entered on

System Screen 2, page 41

. If the values are substantially different, repeat the test.

minimum. The system may stall at a higher pressure depending on hose lengths and fluid composition.

72 332562F

Calibration Checks

1.

Set the mix manifold to the SPRAY position.

2.

The pump and lines must be primed with color or catalyst before doing the Volume Check. See

Prime and Fill the System, page 27

.

3.

If the display is on a Run Mode screen, press to access setup screens.

4.

Scroll to Calibrate in the menu bar.

5.

Scroll to

Calibrate Screen 2, page 64 .

7.

Press the Reset key will reset to 0.

. The volume counter

8.

Trigger the gun into a graduated cylinder.

Dispense a minimum of 500cc of material.

9.

The volume that the unit measured displays on the screen.

10. Compare the amount on the screen to the amount in the graduated cylinder.

repeat the test. If the dispensed volume and measured volume still do not match, check that the A and B pump positions are not reversed.

to cancel the test.

6.

Press the soft key to check.

for the pump you want

(mass) method to determine the actual volumes dispensed. Verify that the fluid line is filled and at the proper pressure before checking. Air in the line or pressure that is too high may cause incorrect values.

332562F 73

Calibration Checks

1.

3.

Set the mix manifold to the FLUSH position.

2.

The meter and lines must be primed with solvent before doing the calibration. See

Prime and Fill the System, page 27

.

If the display is on a Run Mode screen, press to access setup screens.

4.

Scroll to Calibrate in the menu bar.

5.

Scroll to

Calibrate Screen 3, page 65 .

7.

Trigger the gun into a graduated cylinder.

Dispense a minimum of 500cc of material.

8.

The volume that the unit measured displays on the screen.

9.

Compare the amount on the screen to the amount in the graduated cylinder.

repeat the calibration process.

10. Enter the amount of solvent dispensed in the

Measured Volume field on the screen.

11. After the measured volume is entered, the controller calculates the new solvent meter

K-factor and displays it on the screen. The standard meter K-factor is 0.021 cc/pulse.

6.

Press the soft key to initiate the calibration.

(mass) method to determine the actual volumes dispensed.

proper pressure before calibrating. Air in the line or pressure that is too high may cause incorrect calibration values.

12. Press to accept the calibration. Press to cancel the calibration and retain the previous

K-factor.

74 332562F

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